| Schedule of Debt [Table Text Block] |
| | | | | | | | | | | | | | Virginia Real Estate Loan ($6.5 million original principal) payable in monthly installments of $36,426, including interest (at 4.25%), with final payment of $4,858,220 due April 30, 2018 | | $ | 5,526,687 | | | $ | 5,575,586 | | North Carolina Real Estate Loan ($2.24 million original principal) payable in monthly installments of $12,553, including interest (at 4.25%), with final payment of $1,674,217 due April 30, 2018 | | | 1,904,581 | | | | 1,921,433 | | | | | | 7,431,268 | | | | 7,497,019 | | Less current installments | | | 272,939 | | | | 269,996 | | Long-term debt, excluding current installments | | $ | 7,158,329 | | | $ | 7,227,023 | | |